M IBTLongsleeve - Shadowcast DIAMAfleece while the SOFTcurve brim provides

while the SOFTcurve brim provides coverage without distraction

designed for those who demand more from their gear

rolled style (single or double cuffed)

it provides comfort and durability

the FSTTShirt 2 keeps the tried and tested silhouette of our FSTTShirt but elevates the performance with our new COOLmatic | PLUS DIAMAmesh™ knit

M IBTLongsleeve - Shadowcast DIAMAfleece while the SOFTcurve brim providesengineered for cold weather performance. built with COOLmatic EXP DIAMAfleece lite, a lightweight fabric we developed with our Japanese mill, this long sleeve features a smooth outer surface and a soft brushed diamond grid on the inside for comfort. embedded with carbon yarn, it enhances temperature regulation and odor control, making it the ideal layered with our HLSTShirt for chilly runs or a standalone piece on milder days. lightweight, breathable,